Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5PO callsign genealogy
Currently held by SOCIETY OF ONE ARC
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by W5PO's current licensee, walking backwards.
- Yu, MengCAgranted 2009-04-30cancelled 2009-07-31
Successor callsigns
Callsigns held now by people who previously held W5PO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5PO, oldest first.
- SOCIETY OF ONE ARC TX1997-08-28 → cancelled 2009-07-14
- Yu, Meng CA2019-07-31 active